Perhaps you should try some spelling variations:
"nijhoff comp titles 2006" » "nijhoff op titles 2006", "nijhoff column titles 2006", "nijhoff forms titles 2006"
"nijhoff up titles 2006" » "nijhoff op titles 2006", "nijhoff _ titles 2006", "nijhoff j titles 2006", "nijhoff up times 2006", "nijhoff 11 titles 2006"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("nijhoff up titles 2006") OR ("nijhoff comp titles 2006")).
• Removing quotes may allow a broader search: (( nijhoff up titles 2006 ) or ( nijhoff comp titles 2006 )).
• Adding a wildcard symbol may retrieve word variants: (("nijhoff up titles 2006") or ("nijhoff comp titles 2006"))*.